.container {
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
}
.container .nav-left {
  height: -webkit-calc(100vh);
  height: calc(100vh);
  color: #fff;
  background: #001529;
}
.container .main {
  -webkit-box-flex: 1;
  -webkit-flex: 1;
      -ms-flex: 1;
          flex: 1;
  background: #f1f3f5;
  height: -webkit-calc(100vh);
  height: calc(100vh);
  overflow: auto;
}
.container .content {
  position: relative;
  padding: 20px;
}
